ATE21796T1 - CIRCUIT BREAKER. - Google Patents
CIRCUIT BREAKER.Info
- Publication number
- ATE21796T1 ATE21796T1 AT82201603T AT82201603T ATE21796T1 AT E21796 T1 ATE21796 T1 AT E21796T1 AT 82201603 T AT82201603 T AT 82201603T AT 82201603 T AT82201603 T AT 82201603T AT E21796 T1 ATE21796 T1 AT E21796T1
- Authority
- AT
- Austria
- Prior art keywords
- motor
- triac
- resistors
- circuit
- winding
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
- H02H7/0852—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load directly responsive to abnormal temperature by using a temperature sensor
Landscapes
- Protection Of Generators And Motors (AREA)
- Control Of Ac Motors In General (AREA)
- Motor And Converter Starters (AREA)
- Burglar Alarm Systems (AREA)
- Control Of Eletrric Generators (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
1. A protective circuit to prevent the thermal overloading of the winding of an alternating-current electric motor (1) having a triac (2) which is connected in series with the motor winding and interrupts the motor circuit in the event of inadmissible heating of the motor winding, and connected in parallel with which is the series connection of a PTC resistor (4) and of a dropping resistor (5) and the gate of which is connected to the junction of these two resistors (4, 5), and, when the motor is switched off as a result of inadmissible heating, the PTC resistor (4) has a greatly altered resistance value as a result of which the ratio of the voltage division at these resistors (4, 5) is then shifted so that the gate voltage tapped off between the resistors (4, 5) is no longer sufficient to fire the triac (2), characterized in that introduced into the gate feed line of the triac (2) or into the motor (1)-triac(2) circuit between the triac (2) and the series connection of the resistors (4, 5) is a thermal circuit-breaker (3) which can be heated by the motor winding and opens its breaker contact if the temperature of the motor winding exceeds its maximum permissible value.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3203128A DE3203128A1 (en) | 1982-01-30 | 1982-01-30 | CIRCUIT BREAKER |
EP82201603A EP0085202B1 (en) | 1982-01-30 | 1982-12-14 | Protection switch |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE21796T1 true ATE21796T1 (en) | 1986-09-15 |
Family
ID=6154375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT82201603T ATE21796T1 (en) | 1982-01-30 | 1982-12-14 | CIRCUIT BREAKER. |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0085202B1 (en) |
AT (1) | ATE21796T1 (en) |
DE (2) | DE3203128A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1234695B (en) * | 1989-06-06 | 1992-05-26 | Zanussi A Spa Industrie | BASKET DRIVE CONTROL DEVICE FOR WASHING MACHINES OR TOWELS |
DE4226468A1 (en) * | 1992-08-10 | 1994-02-17 | Haschkamp Ernestine | Circuit arrangement for electric heaters |
TW200804163A (en) * | 2006-05-18 | 2008-01-16 | Saurer Gmbh & Co Kg | Delivery mechanism |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1261953B (en) * | 1963-02-06 | 1968-02-29 | Losenhausen Maschb Ag | Device for overload protection of electric motors |
US3324352A (en) * | 1963-06-03 | 1967-06-06 | Tecumseh Products Co | Temperature protection circuit |
CH470799A (en) * | 1967-01-02 | 1969-03-31 | Asea Ab | Thyristor valve circuitry with overvoltage protection for high voltage |
DE1613734B2 (en) * | 1967-10-07 | 1971-12-02 | Danfoss A/S, Nordborg (Dänemark) | OVER-TEMPERATURE PROTECTION FOR THE WINDING OF AC MOTORS |
DE1763311A1 (en) * | 1968-05-03 | 1971-07-15 | Metabowerke Kg | Power tool, in particular electric hand drill |
GB1445711A (en) * | 1973-03-22 | 1976-08-11 | Kenwood Mfg Co Ltd | Electric motor thermal overload protection circuit |
FR2312131A1 (en) * | 1975-05-21 | 1976-12-17 | Lavaud Josiane | Thermally operated solid state relay - utilises apid resistance change at Curie point of sensor |
CA1156300A (en) * | 1980-04-01 | 1983-11-01 | Gordon S. Carlson | Electric blanket safety circuit |
-
1982
- 1982-01-30 DE DE3203128A patent/DE3203128A1/en not_active Withdrawn
- 1982-12-14 AT AT82201603T patent/ATE21796T1/en active
- 1982-12-14 EP EP82201603A patent/EP0085202B1/en not_active Expired
- 1982-12-14 DE DE8282201603T patent/DE3272946D1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0085202A1 (en) | 1983-08-10 |
DE3203128A1 (en) | 1983-08-04 |
DE3272946D1 (en) | 1986-10-02 |
EP0085202B1 (en) | 1986-08-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1513838A (en) | Circuit breaker with solid state passive overcurrent sensing device | |
IE782491L (en) | Heating circuit | |
SE8803644L (en) | ||
EP0026571B1 (en) | Protection of electrical systems using ptc devices | |
ATE21796T1 (en) | CIRCUIT BREAKER. | |
ES464472A1 (en) | Tripping device with thermal deleay | |
ES544426A0 (en) | PROTECTION CIRCUIT OF AN ELECTRIC MOTOR | |
DE3270556D1 (en) | Device providing a regulated alternating voltage source for a power supply from a mains alternating current source | |
GB1445711A (en) | Electric motor thermal overload protection circuit | |
FR2369771A1 (en) | TEMPERATURE LIMITATION DEVICE FOR CHANNEL OR DUCT HEATERS | |
ES481662A1 (en) | Electric bedcover | |
JPS6464589A (en) | Armature current controller of electric motor | |
EP0044244A3 (en) | Single-phase induction motor, and means to control such a motor | |
GB1566005A (en) | Heating circuits for electrically heated blankets or pads | |
GB1111240A (en) | Improvements relating to over-temperature protective arrangements for electrical apparatus | |
JPS55164791A (en) | Turn controller for fan motor | |
IT1095894B (en) | PTC RESISTANCE (TEMPERATURE CONTROL COEFFICIENT) AS A CURRENT LIMITER COMPONENT IN AN ELECTRIC CIRCUIT | |
GB1021333A (en) | Improved electrically heated blanket | |
GB728862A (en) | Improvements in means for providing protection against overheating of electric motors when stalled | |
JPS5716737A (en) | Temperature control device | |
KR850005742A (en) | Overcurrent Protection Controls | |
DE3574207D1 (en) | Electrically heated device comprising a heating cable and a safety circuit against excess heat | |
KR860000179Y1 (en) | 110v/220v combined electric rice pot circuit | |
FR2439404A1 (en) | Overload indicator for three=phase transformer - includes current transformers supplying PTC thermistors to indicate power taken | |
JPS5612834A (en) | Protector for prevention of overheating |